How the New 2025 Tax Law Affects Your 2026 Refund
When Congress passes new tax legislation, the effects often ripple through the filing season that follows. Tax laws enacted or modified during 2025 can directly affect how much you owe or how large your refund is when you file your 2025 return in 2026. Whether changes involved credits, deductions, brackets, or new exclusions, understanding how they apply to your specific situation helps you plan and set realistic expectations for your refund.[1][2]
What Determines Your Refund?
A tax refund is not a bonus or a gift from the government. It represents the difference between what you paid in throughout the year, through withholding or estimated tax payments, and what you actually owed based on your final tax calculation. If you overpaid, you receive a refund. If you underpaid, you owe the difference.[1][3]
Tax law changes affect your refund to the extent that they change your actual tax liability. A new credit reduces what you owe, potentially increasing your refund. A new deduction reduces taxable income, which lowers your liability. Conversely, eliminating or capping a deduction can increase your liability and shrink your refund or create a balance due.[2]
Impact of Inflation-Adjusted Tax Brackets
For the 2025 tax year, the IRS adjusted tax bracket thresholds upward for inflation. This means that a portion of income that might have been taxed at a higher rate in a prior year could now fall into a lower bracket, resulting in a slightly lower tax liability for many filers. If your withholding did not change but your tax owed decreased slightly due to bracket adjustments, you may receive a modestly larger refund.[1][2]
Effect of New or Expanded Deductions
If legislation enacted in 2025 introduced new above-the-line deductions, such as for tips or overtime pay, qualifying taxpayers who take these deductions will reduce their adjusted gross income. A lower AGI can reduce not only your income tax but also affect the calculation of other credits and deductions tied to AGI thresholds, potentially creating a larger overall tax benefit than the deduction itself suggests.[2][3]
Refundable vs. Non-Refundable Credits
The nature of a tax credit, whether refundable or non-refundable, significantly affects its impact on your refund. A non-refundable credit can only reduce your tax liability to zero; any excess credit is lost. A refundable credit can increase your refund beyond zero, meaning you may receive money back even if you owe no tax. If any new credits introduced or expanded in 2025 are refundable, their impact on refunds could be substantial for lower- and middle-income filers.[1][2]
Changes to the Child Tax Credit and Refund Size
The Child Tax Credit, and specifically its refundable component, is one of the most direct drivers of refund size for families with children. If the 2025 legislation expanded the credit amount, raised income limits, or increased the refundable portion, qualifying families will see larger refunds in 2026 compared to prior years. Conversely, if any expansion from prior years expired without renewal, some families may see smaller refunds.[2][3]
Withholding and Estimated Payments: The Real Refund Driver
The most direct driver of refund size is often not tax law changes but rather the gap between your withholding and your final liability. If you had a new job, changed your W-4 allowances, or had significant income changes in 2025, your withholding may be misaligned with your actual tax obligation regardless of law changes.[1]
Taxpayers who want to proactively manage their refund can use the IRS Tax Withholding Estimator to check whether their withholding is appropriate and submit an updated W-4 to their employer. This is particularly valuable for taxpayers whose circumstances changed in 2025.[3]
How to Maximize Your 2026 Refund Under Current Law
Regardless of specific legislative changes, these strategies can help maximize your refund for the 2025 tax year:[1][2]
Contribute to a traditional IRA before the April 15, 2026 deadline to reduce taxable income for 2025
Verify that you are claiming all credits you are entitled to, including education credits, child credits, and energy credits
Check whether any new deductions from 2025 legislation apply to your situation
Ensure all eligible business expenses are claimed if you are self-employed
Confirm your filing status is the most advantageous option available to you
When to Expect Your Refund
The timing of your refund is affected by how you file and when. Electronic returns with direct deposit are generally processed within 21 days. Returns claiming the Earned Income Tax Credit or Additional Child Tax Credit are subject to a mandatory hold and may not result in a deposit until late February even if filed in January.[2][3]
Tax law complexity introduced by new legislation may also cause slight processing delays as the IRS updates its systems. If you filed accurately and electronically, you can track your refund status at IRS.gov using the Where's My Refund tool.[2]
Conclusion
New tax legislation from 2025 can affect your 2026 refund in meaningful ways, particularly if you qualify for new or expanded deductions and credits. Understanding how these changes apply to your situation, ensuring your withholding is aligned with your actual liability, and claiming every benefit available to you will put you in the best position when you file.[1][2][3]
Sources
[1] IRS, Where's My Refund, IRS.gov/refunds
[2] Tax Policy Center, 2025 Legislation Impact Analysis, taxpolicycenter.org
[3] IRS Tax Withholding Estimator, IRS.gov/W4app
